Annual Report.] 84 [May 5, 



Polytechnic Society of the West Riding of Yorkshire, Leeds, October 16th, 1868; 

 Wetterauische Gesellschaft fur die gesammte Naturkunde zu Hanau, November 

 11th, 1868; University Royale a Christiania, November, 1868; Mannheimer 

 Verein fiir Naturkunde, November, 1868; K. Preussische Akademie der Wissen- 

 shaften, Berlin, December 28th, 1868; Medizinisch-naturwissenschaftliche 

 Gesellschaft, zu Jena, January 29th, 1869; Prof. C. M. Von Siebold, Leipzig, 

 February 15th, 1869 ; Belfast Natural History and Philosophical Society, Febru- 

 ary 17th, 1869, presenting their various publications. 



From the Gesellschaft naturforschender Freunde zu Berlin, February 7th, 

 1868; Societe d' Agriculture, etc., de la Sarthe, Le Mans, March 1st, 1868; Natur- 

 forschende Gesellschaft, Gorlitz, March 8th, 1868; Naturforschende Gesellschaft 

 in Danzig, June 2d, 1868; Societe' Imp^riale G^ographique, St. Petersburg, 

 July 13th, 1868; Royal Society of Northern Antiquaries, Copenhagen, Septem- 

 ber 1st, 1868; K. K. geologische Reichsanstalt, Wien, October 16th, 1868; 

 Oberhessische Gesellschaft fur Natur- und Heilkunde, Gicssen, October 24th, 

 1868; Meklenburgischer patriotischer Verein, Rostock, October 25th, 1868; 

 Societe" de Physique et d'Histoire Naturelle de Geneve, November 1st, 1868; 

 Die Pollichia, Durkheim, November 20th, 1868; Soclele^ d'Histoire Naturelle 

 de Strasbourg, December 10th, 1868; K. Gesellschaft der Wissenschaften zu 

 GotLingen, January, 1869; Societe Royale Linneenne de Bruxelles, February 

 15th, 1869; Royal Physical Society of Edinburgh, March 8th, 1869; Edward 

 Newman, Esq., London, Eng., March 11th, 1869 ; Sociele' Linneenne de Bordeaux, 

 March 12th, 1869, acknowledging the receipt of the Society's publications, and 

 presenting their own. 



From the Geographical Society of Berlin, December 20th, 1868, acknowledg- 

 ing the receipt of the Society's publications, and accepting the proposition to 

 exchange. 



From the Oekonomische Gesellschaft, Dresden, April 8th, 1868, presenting its 

 publications and accepting the offer of exchange. 



From the K. Norske Universitet, December 7th, 1868, presenting publications 

 and asking exchange. 



From the Socie^ Litteraire du Brabant Septentrional a Bois le Due, Novem- 

 ber 17th, 1868; Ministere de la Marine et des Colonies, Paris, December 16th, 

 1868 ; Societe 1 des Sciences Physiques et Naturelles de Bordeaux, January 12th, 

 1869 ; Verein fiir vaterlandische Naturkunde in Wurttemberg, Stuttgart, Febru- 

 ary 15th, 1869, acknowledging the receipt of the Society's publications, present- 

 ing their own, and asking that missing numbers of the Society's publications 

 may be sent to them. 



From the Bataafsch Genootschap der Proefondervindelijke Wijsbegeerte te 

 Rotterdam, September 29th, 1868, acknowledging the receipt of the Society's 

 publications, and offering to complete the set of its own publications in the 

 possession of the Society. 



From the Universitas Lugduno-Batava, September 14th, 1868; and from 

 Senor Felipe Poey, Havana, September 19th, 1868, acknowledging the receipt 

 of the Society's publications, and promising to supply deficiencies in the publi- 

 cations heretofore received by the Society from them. 



From the Societe des Sciences de Finlande, Helsingfors, November 30th, 1868. 



